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Weather & Climate in Katsuyama, Japan
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Katsuyama experiences four distinct seasons with an average annual temperature of 50°F (10°C). Winters average 28°F in January while summers reach 71°F in July. The area gets 177 sunny days per year. Annual precipitation totals 87.7 inches (wetter than the 38-inch national average). The area receives 22.6 inches of snow annually, a moderate snowfall amount. The city sits at an elevation of 427 feet.
Temperature
28°F Jan (-2°C)
71°F Jul (22°C)
| Annual Average | 49.9°F |
| 8% below US avg | |
| January Average | 28°F (-2°C) |
| July Average | 71°F (22°C) |
| Sunny Days | 177 days/yr |
Geography
| Elevation | 427 ft (130 m) |
| Area | 98.0 sq mi (253.7 km²) |
| Population Density | 277/sq mi |
| Coordinates | 36.0617°N, 136.5010°W |
| Timezone | Asia/Tokyo |
Precipitation & Snow
Air Quality
Earthquake History
436 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M6.7.
| Mar 25, 2007 | 46 km NW of Nanao, Japan | M6.7 | 142 km | 8 km |
| Jan 1, 2024 | 8 km SW of Anamizu, Japan | M6.2 | 129 km | 10 km |
| Apr 11, 1990 | 11 km ENE of Maizuru, Japan | M6.1 | 115 km | 362 km |
| Jun 6, 2000 | Sea of Japan | M5.9 | 126 km | 10 km |
| Aug 7, 1992 | 21 km N of Miyazu, Japan | M5.8 | 127 km | 358 km |
| Jan 1, 2024 | 7 km N of Anamizu, Japan | M5.6 | 142 km | 10 km |
| Aug 15, 1998 | 22 km WSW of Hotaka, Japan | M5.5 | 105 km | 10 km |
| Apr 21, 2000 | 27 km NNE of Maizuru, Japan | M5.5 | 102 km | 347 km |
| Aug 26, 2010 | 25 km ENE of Katsuyama, Japan | M5.4 | 25 km | 278 km |
| May 17, 1990 | 7 km W of Nanao, Japan | M5.4 | 116 km | 267 km |
| Jan 2, 2024 | 11 km W of Anamizu, Japan | M5.4 | 134 km | 6 km |
| Sep 24, 2003 | 5 km WNW of Ayabe, Japan | M5.4 | 144 km | 372 km |
| Oct 5, 2011 | 24 km W of ?machi, Japan | M5.3 | 108 km | 10 km |
| Mar 12, 2020 | 26 km NNW of Nanao, Japan | M5.3 | 139 km | 10 km |
| Jan 3, 2024 | 12 km N of Anamizu, Japan | M5.3 | 148 km | 10 km |
| Mar 25, 2007 | 34 km NW of Nanao, Japan | M5.2 | 135 km | 14 km |
| Jan 30, 1996 | 67 km NNE of Miyazu, Japan | M5.2 | 104 km | 361 km |
| Jun 24, 2017 | 31 km ENE of Gero, Japan | M5.2 | 99 km | 10 km |
| Apr 22, 1998 | 18 km SE of Hikone, Japan | M5.2 | 101 km | 33 km |
| Oct 5, 2011 | eastern Honshu, Japan | M5.2 | 92 km | 13 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
40 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 3.
| Year | Name | Category | Max Wind | Closest |
| 2023 | Lan | Category 1 | 69 mph | 273 km |
| 2019 | Faxai | Category 3 | 98 mph | 296 km |
| 2019 | Hagibis | Category 2 | 92 mph | 257 km |
| 2018 | Jebi | Category 2 | 98 mph | 103 km |
| 2018 | Trami | Category 1 | 92 mph | 268 km |
| 2018 | Cimaron | Category 1 | 86 mph | 230 km |
| 2018 | Jongdari | Category 1 | 81 mph | 182 km |
| 2017 | Noru | Category 1 | 69 mph | 262 km |
| 2014 | Phanfone | Category 1 | 81 mph | 196 km |
| 2011 | Roke | Category 2 | 92 mph | 175 km |
| 2009 | Melor | Category 1 | 86 mph | 229 km |
| 2008 | Sinlaku | Category 1 | 75 mph | 287 km |
| 2007 | Fitow | Category 1 | 81 mph | 249 km |
| 2005 | Mawar | Category 2 | 81 mph | 266 km |
| 2004 | Ma-on | Category 3 | 92 mph | 244 km |
| 2004 | Songda | Category 1 | 81 mph | 251 km |
| 2004 | Chaba | Category 1 | 69 mph | 145 km |
| 2003 | Etau | Category 2 | 69 mph | 58 km |
| 2002 | Higos | Category 2 | 86 mph | 296 km |
| 2001 | Danas | Category 1 | 81 mph | 273 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tsunami History
9 tsunamis recorded within 500 km. Highest wave on record: 11.3 m (37 ft).
| Year | Location | Cause | Max Wave | Deaths | Distance |
| 1927 | SW. HONSHU ISLAND | Eruption + Earthquake | 11.3 m | 3,022 | 136 km |
| 1909 | ANEGAWA, JAPAN | Earthquake | 1.8 m | 41 | 76 km |
| 2007 | HONSHU: W COAST | Earthquake | 0.1 m | 1 | 142 km |
| 1892 | SW. HONSHU ISLAND | Earthquake | — | 1 | 108 km |
| 1799 | SW. HONSHU ISLAND | Earthquake | — | — | 61 km |
| 1726 | KATSUYAMA | Earthquake | — | — | 52 km |
| 1666 | AICHI PREFECTURE | Earthquake | — | — | 121 km |
| 1586 | ISE BAY | Earthquake | — | 8,000 | 121 km |
| 701 | SEA OF JAPAN | Earthquake | — | — | 107 km |
Source: NOAA/NCEI Historical Tsunami Database.
Nearby Volcanoes
12 volcanoes within 200 km. Closest: Hakusan (26 km).
| Name | Type | Elevation | Last Eruption | Distance |
| Hakusan | Stratovolcano | 2,702 m (8,865 ft) | 1659 | 26 km |
| Ontakesan | Complex | 3,067 m (10,062 ft) | 2014 | 90 km |
| Norikuradake | Stratovolcano(es) | 3,026 m (9,928 ft) | -50 | 95 km |
| Yakedake | Stratovolcano(es) | 2,455 m (8,054 ft) | 1995 | 99 km |
| Washiba-Kumonotaira | Shield(s) | 2,924 m (9,593 ft) | Unknown | 105 km |
| Midagahara | Stratovolcano | 2,621 m (8,599 ft) | 1839 | 113 km |
| Yokodake | Stratovolcano(es) | 2,480 m (8,136 ft) | 1200 | 164 km |
| Niigata-Yakeyama | Lava dome | 2,400 m (7,874 ft) | 1998 | 167 km |
| Myokosan | Stratovolcano | 2,454 m (8,051 ft) | -750 | 171 km |
| Asamayama | Complex | 2,568 m (8,425 ft) | 2019 | 185 km |
| Kusatsu-Shiranesan | Stratovolcano(es) | 2,165 m (7,103 ft) | 2018 | 192 km |
| Shiga | Shield(s) | 2,041 m (6,696 ft) | Unknown | 194 km |
Source: Smithsonian Institution Global Volcanism Program (GVP).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 28°F (-2°C) | 6.0 in | |
| February | 28°F (-2°C) | 4.9 in | Coldest, Driest |
| March | 35°F (1°C) | 5.8 in | |
| April | 47°F (8°C) | 6.8 in | |
| May | 56°F (13°C) | 6.8 in | |
| June | 63°F (17°C) | 9.7 in | |
| July | 71°F (22°C) | 10.9 in | Wettest |
| August | 73°F (23°C) | 8.6 in | Warmest |
| September | 65°F (18°C) | 10.7 in | |
| October | 54°F (12°C) | 6.2 in | |
| November | 44°F (7°C) | 5.5 in | |
| December | 34°F (1°C) | 5.9 in |
Katsuyama has a seasonal temperature swing of 45°F / from 28°F in February to 73°F in August. Total annual precipitation is 87.7 inches, with July being the wettest month (10.9") and February the driest (4.9").